Well, it wasn't really done intended as some kind of "enhancing" filter, but as an (exagerated) color correction to make it match with the color scheme of the background; because the original photo seemed dull and plain in front of such vibrant tones :/
Castaway is simply beautiful Tancla. That is easily one of my favorite BotB tracks ever. It sounded much like many of my favorite composers; Yasunori Mitsuda, Michiru Yamane, Nobuo Uematsu, Hiroki Kikuta... those are the types of names this track conjures.
Also I love your avatar and stare at it when listening. the colors in it are perfect and what a QT OMG!!!